Spike for shoes



28, 1969 YOSHIAKI KOSONO 3,

SPIKE FOR SHOES Filed March 18. 1966 INVENTOR United States Patent3,423,855 SPIKE FOR SHOES Yosliiaki Kosono, 30 Asakusa-Slroten-cho,Taito-ku, Tokyo, Japan Filed Mar. 18, 1966, Ser. No. 535,574 Claimspriority, application Japan, Mar. 22, 1965,

40/ 16,594 US. CI. 36-67 Claims Int. Cl. A44b 21/00; A43c /16 ABSTRACTOF THE DISCLOSURE The present invention relates to a spike for golfshoes and a manufacturing method thereof.

Heretofore, the construction of a conventional spike for golf shoesconsists of a screw-axis member which is screwed into the bottom part ofthe shoes, a flange part which stops the aforesaid screw-axis memberfrom going in too far and a pin extending from the bottom surface of theaforesaid flange part. Both the screw-axis member and the flange partare provided with one metal pole and the flange is made of either metalor plastic for fixing in between the screw-axis member and the pin.

Accordingly, the manufacturing process for such a conventional spikenaturally requires several complicated steps because the screw-axismember and the pin are manufactured from one metal plate material bymeans of a press-treatment, while the flange part is fixed thereafter;and besides, the flange part is, sometimes, made of plastic material inorder to be light in weight, although no considerable weight reductionis effected from such a process.

It is an object of the present invention to provide a spike for golfshoes and a method of manufacturing the same, which spike is simplerthan heretofore due to a manufacturing process in which the golf shoespike comprises a screw-axis member, a pin and a flange part completelyformed with one metal plate. Consequently, the prior art process forforming the flange part in a separate step can be now avoided, whichdirectly results in easier and more substantial production, and inaddition, the weight problem of the conventional spike may be solved.

With this and other objects in view which will become apparent in thefollowing detailed description, the present invention will be clearlyunderstood in connection with the accompanying drawing, in which:

FIGURE 1 is a perspective view of one embodiment of the present golfshoe spike;

FIG. 2 is an elevational view and in part a section along the lines 2-2of FIG. 1 before the axis members are cut or pressed upwardly;

FIG. 3 is a section along the lines 2-2 of FIG. 1 after the axis membersare pressed upwardly;

FIG. 4 is a top plan view of FIG. 3;

FIG. 5 is a perspective view of another embodiment of the spike inaccordance with the present invention;

FIG. 6 is a section along the lines 66 of FIG. 5;

FIG. 7 is a top plan view of FIG. 6; and

FIG. 8 is an axial sectional view of a screw illustrating a screwforming process.

Referring now to the drawing, first a flange 1 is formed 'from a metalplate and then a hollow pin 2 is centrally formed by a conventionalpress-method operation such as pressing a pin formation out of the metalplate by pressing the plate with a pin-shaped die press, so that thehollow pin 2 extends integrally from the plane and to one side of theplate. Also a recessed surface 3 of the flange 1 is formed (FIG. 2) andthe strength of the flange 1 is remarkably improved. The strength of thepin 2 is satisfactory as it is formed by the pressing or squeezingprocess. The shape of the flange and/or the sectional shape of the pinis not limited to circular shapes, square shape being available, forexample. In the next step, a hollow axis screw member 4 is formed bycutting out at least two tabs 5 angularly spaced apart from each other,such as, for example, two opposed portions 5 of the surface of theflange 1 and then pressing the same in an upward direction opposite tothat of the pointing of the pin. As illustrated in FIGS. 4 and 7, themember 4 is formed by the two portions or tabs 5 which with the baseportion of each tab 5 define a juncture with the base portion 5 of thepin 2 and are pressed out and bent out of and to the other side of theflange 1 coaxially relative to the hollow pin 2 and these upwardly benttabs 4 have opposed concave faces defining a generally cylindrical axismember 5, in diameter so as to be substantially cylindrical; such amember may also be made with three or more pieces if the strength of theflange permits. The vertically upwardly extending pieces 5 constituteaxis member 4 and cooperate with each other and are formed with amale-screw thread on, for example, the outer-circumference or surfacethereof '(FIGS. 1 and 5). The formation of the circular projection onthe surface of the flange 1 may be constructed either when pieces 5 arepressed out, upwardly, or afterwards.

Since there are spaces between the longitudinal or side edges of thepieces 5, the member 4 may be divided in the axial direction as shown inFIGS. 1 to 4; however, the member 4 can be made into a perfect circularshape by closing these spaces and connecting the longitudinal edges. Inthis embodiment, the base part 5' or juncture of the tabs 4 with the pin2, is frustoconical in shape from bottom to top in an inwardly directionas shown in FIG. 6. Accordingly, an eflicient spike having satisfactorystrength for the member 4 and for the connecting part of the flange 1,shown in FIGS. 5 and 7, is obtained.

Referring now again to the drawing, and more particularly to FIG. 8,there is illustrated a screw member 4 pressed by screw dies b from theouter circumference incorporating an inner die member a, forming on theouter surface of the member 4, the male screw threads 6. For insertingthe screw member 4 into the bottom part of the golf shoe, a proper toolis used.

In case a driver is used for such an insertion operation, receptacleholes may be provided on the surface of the flange 1, and the bottom endof the spike must be reformed when a spanner is used as a tool. Theaforementioned holes or reformation of the bottom end of the spike areformed simultaneously with the pressing out of the pin. Further, theholes 7 in the flange 1, formed when pressing out pieces 5 from thesurface of the flange 1 for forming the screw member 4 may be adapted tobe utilized as tool connecting holes.

In order to provide the pin 2 with an anticorrosive characteristic,either a tempering process or a covering process with an ultrahard metal8 may be applied (FIG. 6).

The golf shoe spike of the present invention may be manufactured from athin metal plate and is light weight due to the hollow construction ofboth the pin and the screw member.

Further, the pin or spike has sufficient strength and is durable due tothe single body construction thereof, particularly processed by thepressing step in which the pin is squeezed or pressed out from theflange and the screw member 4 is projected upwardly in an oppositedirection to the pin. Furthermore, the manufacturing process of thepresent invention is simplified with the process steps of squeezing andpressing which two steps are readily and easily performed and constitutethe main manufacturing steps, and after being performed substantiallyleave little more in time or effort for the completed product.

While I have disclosed several embodiments of the present invention itis to be understood that these embodiments are given by example only andnot in a limiting sense, the scope of the present invention beingdeterrn-ned by the objects and the claims.

What I claim is:

1. A spike for golf shoes comprising a metal plate having a centralportion extending integrally from the plane of and to one side of saidplate defining a hollow pin and a flange surrounding said pin,

an axis member comprising at least two tabs angularly spaced apart fromeach other cut out from said flange with the base portion of each tabdefining a juncture with the base portion of said pin,

said tabs being bent out of and to the other side of said flangecoaxially with said pin, and

said upwardly bent tabs having opposed concave faces defining agenerally cylindrical axis member with one of the surfaces thereofhaving screw threads thereon.

2. The spikes, as set forth in claim 1, wherein the side edges of saidtabs are spaced from each other.

3. The spike, as set forth in claim 1, further comprising a metal platecovering said pin with said covering being of harder material than thematerial of said pin.

4. The spike, as set forth in claim 1, wherein the side edges of saidtabs are joined to one another defining a substantially hollow cylinder,and

the juncture of said tabs with said pin being frustoconical in shape.

5. The spike, as set forth in claim 1, wherein said axis member isformed substantially into a hollow cylinder.

References Cited UNITED STATES PATENTS 1,146,157 7/1915 Hannon 36591,730,996 10/1929 Cowan 36-67 2,618,824 11/ 1952 Poupitch 24-732,658,289 11/1953 Schrieber 36--59 PATRICK D. LAWSON, Primary Examiner.

G. H. KRIZMANICH, Assistant Examiner.

U.S. Cl. X.R.

